High-precision adjustable v-block and method of using same

Abstract

The application discloses a high-precision adjustable V-shaped support and a using method thereof, and relates to the technical field of machining.The application is used for solving the problems that the existing slender rod parts are clamped on a four-axis numerical control vertical milling machine, the rigidity is insufficient after the tail seat is tightly pressed, the clamping range of the machine tool is affected, and the positioning precision is poor due to clamping through the supporting seat.The device comprises a base, a V-shaped seat, a lifting assembly and two groups of guide assemblies, the V-shaped seat is arranged above the base through the lifting assembly, the lifting assembly can drive the V-shaped seat to lift along the height direction, and one group of guide assemblies is arranged on the two sides of the lifting assembly in parallel, and the guide assemblies provide guidance for the lifting of the V-shaped seat.The application is used for clamping the slender rod parts on the four-axis numerical control vertical milling machine.

Description

Technical Field

[0001] This invention relates to the field of machining technology, specifically to a high-precision adjustable V-shaped support and its usage method. Background Technology

[0002] When machining slender shaft parts on a four-axis CNC vertical milling machine, the workpiece is typically fixed by clamping one end of the fourth axis and using a tailstock to hold the other end in place. However, this clamping method has the following problems:

[0003] 1. The middle position of the workpiece is suspended in the air, and the rigidity is insufficient after clamping. Vibration is easily generated when machining the middle position of the workpiece, which affects the machining accuracy and quality of the workpiece.

[0004] 2. Because the fourth axis and tailstock of a four-axis CNC vertical milling machine need to be clamped on the machine tool's worktable, and the tailstock itself has a certain length, the tailstock occupies the space of the machine tool's worktable, affecting the workpiece clamping space, and making the machine tool unable to clamp excessively long workpieces.

[0005] To address existing technical issues, current methods for machining slender shaft parts on four-axis CNC vertical milling machines typically involve clamping one end of the workpiece on the fourth axis and using an adjustable V-block in the middle. However, because these V-blocks lack positioning, the workpiece needs to be re-aligned with the worktable after clamping, which is difficult and consequently affects machining efficiency and accuracy. Summary of the Invention

[0006] To address the problems of insufficient rigidity and limited clamping range of slender rod parts when clamped on a four-axis CNC vertical milling machine using a tailstock, and poor positioning accuracy caused by clamping with a support base, this invention proposes a high-precision adjustable V-shaped support and its usage method.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0008] A high-precision adjustable V-shaped support includes a base, a V-shaped support, a lifting assembly, and two sets of guide assemblies. The V-shaped support is positioned directly above the base via the lifting assembly, and the lifting assembly can drive the V-shaped support to rise and fall along the height direction. A set of guide assemblies is provided parallel to both sides of the lifting assembly, and the guide assemblies provide guidance for the rising and falling of the V-shaped support.

[0009] Furthermore, the lifting assembly includes a nut and a screw. The lower end of the screw is threadedly connected to the middle of the upper surface of the base, and the upper end of the screw is rotatably connected to the middle of the lower surface of the V-shaped seat. The nut is fitted into the middle of the screw and threadedly connected to the screw. The nut is rotatably connected to the upper surface of the base.

[0010] Furthermore, the screw is provided with an upper fine optical shaft section, a middle coarse thread section and a lower fine optical shaft section from top to bottom. The upper fine optical shaft section is inserted into the middle of the lower end face of the V-shaped seat, and the lower end shoulder of the upper fine optical shaft section is in a limiting fit with the lower end face of the V-shaped seat. The middle coarse thread section is threaded with the nut. The lower fine optical shaft section is inserted into the middle of the upper end face of the base, and the upper end shoulder of the lower fine optical shaft section is in a limiting fit with the upper end face of the base.

[0011] Furthermore, the lower end face of the nut is rotatably connected to the upper end face of the base via a planar thrust ball bearing.

[0012] Furthermore, a mounting groove is provided in the middle of the upper surface of the base, and a planar thrust ball bearing is installed in the mounting groove. The lower end face of the planar thrust ball bearing mates with the bottom of the mounting groove, and the upper end face of the planar thrust ball bearing mates with the lower end face of the nut.

[0013] Furthermore, the guide assembly includes a positioning pin, the lower end of which is fixedly perpendicular to the lower end face of the base, and the upper end of which is inserted into the lower end face of the V-shaped seat and slidably connected to the V-shaped seat.

[0014] Furthermore, the lower end of the locating pin is inserted into the lower end face of the base and is fixedly connected to the base.

[0015] Furthermore, a V-groove is provided on the upper surface of the V-shaped seat along the length direction.

[0016] Furthermore, a positioning block is provided on the lower end surface of the base along the length direction.

[0017] A method for using a high-precision adjustable V-type support includes the following steps:

[0018] First, install the V-bolt on the table of the four-axis CNC milling machine. The positioning block of the V-bolt is inserted into the T-slot of the machine table to achieve positioning of the V-bolt. Then, clamp one end of the slender shaft workpiece to be machined on the fourth axis of the machine tool and adjust the position of the V-bolt horizontally so that the other end of the slender shaft workpiece is directly above the V-groove. At this time, rotate the nut to drive the V-bolt to adjust its height through the screw, so that the V-groove of the V-bolt can stably support the slender shaft workpiece to be machined. This, along with horizontal alignment of the slender shaft workpiece, ensures the clamping accuracy of the slender shaft workpiece.

[0019] The beneficial effects of this invention compared to the prior art are:

[0020] The adjustable V-shaped support is used for four-axis CNC milling. It is connected to the machine tool table T-slot for positioning via the support positioning block.

[0021] The height of the V-shaped seat is adjusted by manually rotating the nut to move the screw up and down, thereby supporting the outer surface of the slender shaft workpiece clamped on the four-axis CNC milling machine and providing stable support for the workpiece.

[0022] The base and V-shaped seat are connected by a locating pin, which ensures the positioning accuracy of the V-shaped seat while preventing it from rotating.

[0023] Placing a planar thrust bearing between the nut and the base reduces the frictional force on the rotating nut.

[0024] Using a high-precision adjustable V-bracket to clamp slender shaft workpieces in a four-axis CNC milling machine makes the workpiece clamping more stable, greatly improves the alignment efficiency, and ensures the alignment and positioning accuracy within the range of 0.06mm. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a high-precision adjustable V-shaped support in this invention;

[0026] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure at point AA

[0027] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure at BB;

[0028] Figure 4 This is a cross-sectional structural diagram of the V-shaped seat in this invention;

[0029] Figure 5 This is a cross-sectional structural diagram of the base in this invention;

[0030] Figure 6 This is a schematic diagram of the structure of the present invention applied to a four-axis CNC milling machine.

[0031] Figure 7 yes Figure 6 A schematic diagram of the left-side view structure.

[0032] In the diagram: 1-base, 2-locating pin, 3-V-slot, 4-nut, 5-screw, 6-flat thrust ball bearing, 7-mounting slot, 8-mounting slot, 9-locating block, 10-table, 11-machine tool fourth axis, 12-T-slot, 13-machine tool spindle, 14-slender shaft workpiece to be processed, 51-upper thin smooth shaft section, 52-middle coarse thread section, 53-lower thin smooth shaft section. Detailed Implementation

[0033] To make the technical problems solved, the technical solutions, and the beneficial effects of the present invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention.

[0034] Specific implementation method one: Combining Figures 1 to 7 This embodiment describes a high-precision adjustable V-shaped support, which includes a base 1, a V-shaped support 3, a lifting assembly, and two sets of guide assemblies. The V-shaped support 3 is positioned directly above the base 1 via the lifting assembly, and the lifting assembly can drive the V-shaped support 3 to rise and fall along the height direction. A set of guide assemblies is provided parallel to both sides of the lifting assembly, and the guide assemblies provide guidance for the rising and falling of the V-shaped support 3.

[0035] Specific Implementation Method Two: Combining Figures 1 to 7 This embodiment describes a lifting assembly comprising a nut 4 and a screw 5. The lower end of the screw 5 is threadedly connected to the middle of the upper surface of the base 1, and the upper end of the screw 5 is rotatably connected to the middle of the lower surface of the V-shaped seat 3. The nut 4 is fitted onto the middle of the screw 5 and threadedly connected to the screw 5. The nut 4 is rotatably connected to the upper surface of the base 1.

[0036] The undisclosed technical features in this embodiment are the same as those in Specific Embodiment 1.

[0037] The height of the V-shaped seat is adjusted by manually rotating the nut to move the screw up and down, thereby supporting the outer surface of the slender shaft workpiece clamped on the four-axis CNC milling machine and providing stable support for the workpiece.

[0038] Specific implementation method three: Combining Figures 1 to 7 In this embodiment, the screw 5 is provided with an upper fine optical axis section 51, a middle coarse thread section 52, and a lower fine optical axis section 53 from top to bottom. The upper fine optical axis section 51 is inserted into the middle of the lower end face of the V-shaped seat 3, and the lower end shoulder of the upper fine optical axis section 51 is matched with the lower end face of the V-shaped seat 3. The middle coarse thread section 52 is threaded with the nut 4. The lower fine optical axis section 53 is inserted into the middle of the upper end face of the base 1, and the upper end shoulder of the lower fine optical axis section 53 is matched with the upper end face of the base 1.

[0039] The undisclosed technical features in this embodiment are the same as those in Specific Embodiment Two.

[0040] The base 1 and the lower thin optical axis section 53 are fitted with a clearance, while the V-shaped seat and the upper thin optical axis section 51 are fitted with a tight fit.

[0041] Specific implementation method four: Combination Figures 1 to 7 In this embodiment, the lower end face of the nut 4 is rotatably connected to the upper end face of the base 1 via a planar thrust ball bearing 6.

[0042] The undisclosed technical features in this embodiment are the same as those in Specific Embodiment Two.

[0043] Placing a planar thrust bearing between the nut and the base reduces the frictional force on the rotating nut.

[0044] Specific Implementation Method Five: Combining Figures 1 to 7 In this embodiment, the upper surface of the base 1 has a mounting groove 7 in the middle. The planar thrust ball bearing 6 is set in the mounting groove 7. The lower end face of the planar thrust ball bearing 6 is engaged with the bottom of the mounting groove 7, and the upper end face of the planar thrust ball bearing 6 is engaged with the lower end face of the nut 4.

[0045] The undisclosed technical features in this embodiment are the same as those in Specific Embodiment Four.

[0046] Specific Implementation Method Six: Combination Figures 1 to 7 This embodiment describes a guide component including a positioning pin 2. The lower end of the positioning pin 2 is perpendicularly fixed to the lower end face of the base 1, and the upper end of the positioning pin 2 is inserted into the lower end face of the V-shaped seat 3 and slidably connected to the V-shaped seat 3.

[0047] The undisclosed technical features in this embodiment are the same as those in Specific Embodiment 1.

[0048] The base and V-shaped seat are connected by a locating pin, which ensures the positioning accuracy of the V-shaped seat while preventing it from rotating.

[0049] The base 1 and the positioning pin 2 are tightly fitted together, serving a positioning function. The V-shaped seat 3 and the positioning pin 2 are fitted with a clearance, serving a positioning and guiding function.

[0050] The screw 5 and the nut 4 are threaded together. When the nut 4 is rotated, the screw 5 and the V-shaped seat 3 move up and down. At the same time, the two locating pins 2 restrict the position of the V-shaped seat 3.

[0051] Specific implementation method seven: Combining Figures 1 to 7 In this embodiment, the lower end of the positioning pin 2 is inserted into the lower end surface of the base 1 and is fixedly connected to the base 1.

[0052] The undisclosed technical features in this embodiment are the same as those in Specific Embodiment Six.

[0053] Specific implementation method eight: Combination Figures 1 to 7 This embodiment describes a V-shaped groove 8 provided along the length direction on the upper surface of the V-shaped seat 3.

[0054] The undisclosed technical features in this embodiment are the same as those in Specific Embodiment 1.

[0055] Specific Implementation Method Nine: Combining Figures 1 to 7 To illustrate this embodiment, a positioning block 9 is provided on the lower end surface of the base 1 along the length direction.

[0056] The undisclosed technical features in this embodiment are the same as those in Specific Embodiment 1.

[0057] The adjustable V-shaped support is used for four-axis CNC milling. It is connected to the machine tool table T-slot for positioning via the support positioning block.

[0058] Specific Implementation Method Ten: Combining Figures 1 to 7 This embodiment describes a method for using a high-precision adjustable V-shaped support, comprising the following steps:

[0059] First, install the V-shaped support on the table 10 of the four-axis CNC milling machine. The positioning block 9 of the V-shaped support is inserted into the T-slot 12 of the machine table to achieve positioning of the V-shaped support. Then, clamp one end of the slender shaft workpiece 14 to be processed on the fourth axis 11 of the machine tool and adjust the position of the V-shaped support in the horizontal direction so that the other end of the slender shaft workpiece 14 to be processed is positioned directly above the V-slot 8. At this time, rotate the nut 4, and drive the V-shaped seat 3 to adjust its height through the screw 5 so that the V-slot 8 of the V-shaped seat 3 can stably support the slender shaft workpiece 14 to be processed, and perform horizontal alignment with the slender shaft workpiece 14 to ensure the clamping accuracy of the slender shaft workpiece 14 to be processed.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision adjustable V-shaped support, characterized in that: It includes a base (1), a V-shaped seat (3), a lifting assembly and two sets of guide assemblies. The V-shaped seat (3) is set directly above the base (1) through the lifting assembly, and the lifting assembly can drive the V-shaped seat (3) to rise and fall along the height direction. A set of guide assemblies is provided parallel to both sides of the lifting assembly, and the guide assemblies provide guidance for the rise and fall of the V-shaped seat (3).

2. The high-precision adjustable V-shaped support according to claim 1, characterized in that: The lifting assembly includes a nut (4) and a screw (5). The lower end of the screw (5) is threaded to the middle of the upper surface of the base (1), and the upper end of the screw (5) is rotatably connected to the middle of the lower surface of the V-shaped seat (3). The nut (4) is fitted in the middle of the screw (5) and threaded to the screw (5). The nut (4) is rotatably connected to the upper surface of the base (1).

3. A high-precision adjustable V-shaped support according to claim 2, characterized in that: The screw (5) is provided with an upper fine optical shaft section (51), a middle coarse thread section (52) and a lower fine optical shaft section (53) from top to bottom. The upper fine optical shaft section (51) is inserted into the middle of the lower end face of the V-shaped seat (3). The lower end shoulder of the upper fine optical shaft section (51) is matched with the lower end face of the V-shaped seat (3). The middle coarse thread section (52) is threaded with the nut (4). The lower fine optical shaft section (53) is inserted into the middle of the upper end face of the base (1). The upper end shoulder of the lower fine optical shaft section (53) is matched with the upper end face of the base (1).

4. A high-precision adjustable V-shaped support according to claim 2, characterized in that: The lower end face of the nut (4) is rotatably connected to the upper end face of the base (1) by a planar thrust ball bearing (6).

5. A high-precision adjustable V-shaped support according to claim 4, characterized in that: The upper surface of the base (1) is provided with a mounting groove (7) in the middle. The planar thrust ball bearing (6) is set in the mounting groove (7). The lower end face of the planar thrust ball bearing (6) is engaged with the bottom of the mounting groove (7). The upper end face of the planar thrust ball bearing (6) is engaged with the lower end face of the nut (4).

6. A high-precision adjustable V-shaped support according to claim 1, characterized in that: The guide assembly includes a positioning pin (2), the lower end of which is fixedly perpendicular to the lower end face of the base (1), and the upper end of which is inserted into the lower end face of the V-shaped seat (3) and slidably connected to the V-shaped seat (3).

7. A high-precision adjustable V-shaped support according to claim 6, characterized in that: The lower end of the positioning pin (2) is inserted into the lower end face of the base (1) and is fixedly connected to the base (1).

8. A high-precision adjustable V-shaped support according to claim 1, characterized in that: The upper surface of the V-shaped seat (3) is provided with a V-shaped groove (8) along the length direction.

9. A high-precision adjustable V-shaped support according to claim 1, characterized in that: A positioning block (9) is provided on the lower end surface of the base (1) along the length direction.

10. A method of using a high-precision adjustable V-shaped support as described in any one of claims 1 to 9, characterized in that: Includes the following steps: First, install the V-shaped support on the table (10) of the four-axis CNC milling machine. Insert the positioning block (9) of the V-shaped support into the T-slot (12) of the machine table to achieve the positioning of the V-shaped support. Then, clamp one end of the slender shaft workpiece (14) to be processed on the fourth axis (11) of the machine tool and adjust the position of the V-shaped support in the horizontal direction so that the other end of the slender shaft workpiece (14) to be processed is positioned directly above the V-slot (8). At this time, rotate the nut (4) and drive the V-shaped seat (3) to adjust the height through the screw (5) so that the V-slot (8) of the V-shaped seat (3) can stably support the slender shaft workpiece (14) to be processed and coordinate with the slender shaft workpiece (14) to be processed in the horizontal direction to ensure the clamping accuracy of the slender shaft workpiece (14).

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